Remove link_chrome_on_windows GN flag.

ash/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//testing/test.gni")
 
 gypi_values = exec_script("//build/gypi_to_gn.py",
                           [ rebase_path("ash.gyp") ],
@@ skipping 334 matching lines @@
 
   # TODO(GYP) is this necessary?
   #['OS=="linux" and component=="shared_library" and use_allocator!="none"', {
   # ldflags = "-rdynamic"
 
   if (!is_chromeos || use_ozone) {
     sources -= [ "sticky_keys/sticky_keys_unittest.cc" ]  # crbug.com/354035
   }
 }
 
-if (!is_win || link_chrome_on_windows) {
-  executable("ash_shell") {
-    testonly = true
-    sources = [
-      "shell/shell_main.cc",
-    ]
+executable("ash_shell") {
+  testonly = true
+  sources = [
+    "shell/shell_main.cc",
+  ]
 
-    deps = [
-      ":ash_shell_lib",
-      "//components/user_manager",
-    ]
+  deps = [
+    ":ash_shell_lib",
+    "//components/user_manager",
+  ]
 
-    if (is_win) {
-      configs -= [ "//build/config/win:console" ]
-      configs += [ "//build/config/win:windowed" ]
-      deps += [ "//sandbox" ]
-    }
-
-    if (is_chromeos) {
-      deps += [ "//device/bluetooth" ]
-    }
+  if (is_win) {
+    configs -= [ "//build/config/win:console" ]
+    configs += [ "//build/config/win:windowed" ]
+    deps += [ "//sandbox" ]
   }
 
-  test("ash_shell_unittests") {
-    sources = [
-      "shell/window_watcher_unittest.cc",
-      "test/ash_unittests.cc",
-    ]
-
-    deps = [
-      ":ash_shell_lib",
-      ":test_support",
-      "//base/test:test_support",
-      "//components/user_manager",
-      "//content/test:test_support",
-      "//skia",
-      "//testing/gtest",
-      "//ui/accessibility",
-    ]
-
-    if (is_chromeos) {
-      deps += [ "//ui/display" ]
-    }
+  if (is_chromeos) {
+    deps += [ "//device/bluetooth" ]
   }
 }
+
+test("ash_shell_unittests") {
+  sources = [
+    "shell/window_watcher_unittest.cc",
+    "test/ash_unittests.cc",
+  ]
+
+  deps = [
+    ":ash_shell_lib",
+    ":test_support",
+    "//base/test:test_support",
+    "//components/user_manager",
+    "//content/test:test_support",
+    "//skia",
+    "//testing/gtest",
+    "//ui/accessibility",
+  ]
+
+  if (is_chromeos) {
+    deps += [ "//ui/display" ]
+  }
+}